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Catalyst decay in the kinetics of methylcyclohexane dehydrogenation over Pt‐NaY zeolite
Author(s) -
Corma A.,
Cid R.,
Agudo A. Lopez
Publication year - 1979
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450570514
Subject(s) - methylcyclohexane , dehydrogenation , catalysis , toluene , chemistry , zeolite , platinum , reaction rate constant , kinetics , space velocity , inorganic chemistry , organic chemistry , selectivity , physics , quantum mechanics
Abstract The kinetics of the dehydrogenation of methylcyclohexane to toluene over platinum on NaY zeolite have been studied at 390°C and atmospheric pressure. Cumulative conversion data obtained at constant space velocity and various reaction times on stream was treated using the “Time on Stream” theory. In this way the rate constants for both dehydrogenation and catalyst decay have been determined. The reaction has been shown to occur via a series of consecutive partial dehydrogenations, with the first dehydrogenation as the rate controlling step. The influence of the partially dehydrogenated products as well as the influence of the toluene, on the deactivation of the catalyst is discussed.